In large bowl, combine all ingredients except tortillas and cooking spray, mixing until very well combined.
Microwave tortillas for 20-30 seconds to make rolling easier, then spoon 2 heaping tablespoons of filling down the middle of each tortilla. Roll tortillas up tightly and place seam-side down on a foil-lined baking sheet. Spray the tops lightly with cooking spray (this helps them brown and crisp).
At this point, you could freeze the taquitos and cook from frozen another day, or bake for 15-20 minutes until crisp and golden brown. Serve with sour cream.
Recipe by Hidden Ponies at https://hiddenponies.com/2011/05/creamy-chicken-taquitos/